The AD7792/AD7793 are 3-channel, low noise, low power, 16/24-bit ∑-Δ ADCs with on-chip in-amp and reference.
The AD7792/AD7793 is a complete analog front end designed for high precision measurement applications. It features a low noise 16 or 24-bit sigma-delta ADC, three differential analog inputs, and an on-chip programmable gain instrumentation amplifier capable of handling signals with small amplitudes directly.
The device includes a precision internal band gap reference and supports both internal and external clocking options. Key features include simultaneous 50 Hz/60 Hz rejection, programmable current sources for excitation, and a bias voltage generator to set common-mode voltage. It operates from a single power supply of 2.7 V to 5.25 V in a 16-lead TSSOP package.
| Effective Resolution (AD7793) | 24 Bits min |
|---|---|
| Effective Resolution (AD7792) | 16 Bits min |
| Output Update Rate | 4.17 - 500 Hz nom |
| Power Supply Voltage Range | 2.7 V to 5.25 V |
| Operating Temperature Range | -40°C to +105°C |
| Package Type | 16-lead TSSOP |
| Interface Compatibility | SPI, QSPI, MICROWIRE, DSP-compatible |
The device consumes a typical current of 400 pA.
Yes, it contains a precision low noise, low drift internal band gap reference.
With a gain setting of 64, the rms noise is 40 nV when the update rate equals 4.17 Hz.